MoCA splitter device

ABSTRACT

A MoCA splitter device may include an input port, a first output port and a second output port, a first transmission line configured to connect the input port to the first output port, a second transmission line configured to connect the input port to the first output port, a first isolation element configured to connect the first transmission line to the second transmission line, a second isolation element configured to connecting the first transmission line to the second transmission line. The first isolation element and the second isolation element are configured to provide an isolation level between the first output port and the second output port that is less than a predetermined isolation level of about less than 16 dB in a MoCA frequency band.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of and claims priority to U.S. patentapplication Ser. No. 17/165,776, which was filed on Feb. 2, 2021, whichclaims priority to U.S. Provisional Patent Application 62/969,386, whichwas filed on Feb. 3, 2020, and is incorporated herein by reference inits entirety.

BACKGROUND

A Wilkinson circuit (also referred to as a power divider) is a type ofcircuit that can achieve certain types of isolation between outputports. It also can be used as a power combiner because it is made up ofpassive components as well as in other applications because of the lowerattenuation and isolation in the higher frequency spectrum relative tothat of ferrite-based splitters.

However, conventional Wilkinson splitters and other types of splitters,such as ferrite-based splitters, often suffer from excessive isolationlevels between the output ports. Additionally, conventional Wilkinsonsplitters and other types of splitters, such as ferrite-based splitters,may have non-uniform levels of isolation between the different outputports. This may lead to excessive noise on the output signals orinconsistent network reliability.

Furthermore, conventional ferrite-based splitters and other types ofsplitters, such as resistive splitters, may have a high level ofinsertion loss. This may result in degradation of the signal at theoutput ports. Accordingly, an improved MoCA splitter with improvedisolation between the output ports and improved insertion loss would beuseful.

SUMMARY

A MoCA splitter device may include an input port, a first output portand a second output port, a first transmission line configured toconnect the input port to the first output port, a second transmissionline configured to connect the input port to the first output port, afirst isolation element configured to connect the first transmissionline to the second transmission line, a second isolation elementconfigured to connecting the first transmission line to the secondtransmission line. The first isolation element and the second isolationelement are configured to provide an isolation level between the firstoutput port and the second output port that is less than a predeterminedisolation level of about less than 16 dB in a MoCA frequency band.

In some embodiments, the first isolation element and the secondisolation element are configured to provide an insertion loss betweenthe input port and the output ports that is less than a predeterminedinsertion loss level. In some embodiments, a type and a value of thefirst isolation element and a type and a value of the second isolationelement are selected to configure the isolation level between each ofthe output ports.

In some embodiments, a MoCA splitter device may include an input port, aplurality of output ports, a plurality of splitters configured to beconnected between the input port and the output ports, wherein eachsplitter comprises a first transmission line, a second transmissionline, a first isolation element configured to be connected between thefirst transmission line and the second transmission line, and a secondisolation element configured to be connected between the firsttransmission line and the second transmission line, wherein the secondisolation element is located downstream from the first isolationelement, wherein the splitter device comprises a multi-stage splitterdevice, wherein the splitter device comprises a Microstrip splitterdevice, wherein the splitter device includes a Wilkinson circuitconfiguration, wherein the first isolation element and the secondisolation element are configured to provide an isolation level betweeneach of the output ports of less than a predetermined isolation level ina MoCA frequency band, wherein the first isolation element and thesecond isolation element are configured to provide an insertion lossbetween the input port and each of the output ports of less than apredetermined insertion loss level, wherein the first isolation elementand the second isolation element are configured to provide asubstantially uniform isolation level between the input port and each ofthe output ports, wherein the predetermined isolation level is about 16dB or less, wherein the MoCA frequency band is 1125-1675 MHz, whereinthe predetermined insertion loss level is about 4 dB or less percascaded splitter, wherein a type and a value of the first isolationelement and a type and a value of the second isolation element areselected to configure the isolation level between each of the outputports, wherein the type and the value of the first isolation element andthe type and the value of the second isolation element are selected toconfigure the insertion loss between the input port and each of theoutput ports, and wherein the type and the value of the first isolationelement and the type and the value of the second isolation element areselected to configure the substantially uniform isolation level betweenthe input port and each of the output ports.

It will be appreciated that this summary is intended merely to introducesome aspects of the present methods, systems, and media, which are morefully described and/or claimed below. Accordingly, this summary is notintended to be limiting.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute apart of this specification, illustrate embodiments of the presentteachings and together with the description, serve to explain theprinciples of the present teachings. In the figures:

FIG. 1 illustrates a schematic view of a two-way, one-stage splitterdevice in accordance with aspects of the present disclosure.

FIG. 2 illustrates a schematic view of a two-way, two-stage splitterdevice in accordance with aspects of the present disclosure.

FIG. 3 illustrates a schematic view of a two-way splitter device inaccordance with aspects of the present disclosure.

FIG. 4 illustrates a schematic view of a four-way, two-stage splitterdevice in accordance with aspects of the present disclosure.

FIG. 5 illustrates a schematic view of an eight-way, two-stage splitterdevice in accordance with aspects of the present disclosure.

FIG. 6 illustrates a graph showing input to MoCA insertion loss of atwo-way splitter device in accordance with aspects of the presentdisclosure.

FIG. 7 illustrates a graph showing output to output isolation of thetwo-way splitter device in accordance with aspects of the presentdisclosure.

FIG. 8 illustrates a graph showing input to MoCA insertion loss of thefour-way micro-strip splitter device in accordance with aspects of thepresent disclosure.

FIG. 9 illustrates a graph showing output to output isolation of thefour-way splitter device in accordance with aspects of the presentdisclosure.

DETAILED DESCRIPTION

The present disclosure relates to a splitter device. More particularly,the present disclosure relates to a micro-strip MoCA splitter devicethat includes an N-way reactive micro-strip design that improves thethermal behavior, insertion loss, and isolation in the MoCA frequencyband (e.g., 1125 MHz-1675 MHz) when compared to conventional reactivetoroidal splitters and conventional resistive splitters.

In one embodiment, the splitter may be a two-stage, four-way splitterwith a thickness of about 39 mil such that the splitter is tuned for theMoCA frequency band. For two-stage and three-stage, two-way splitters,additional bandwidth may be achieved to operate in the 900 MHz-3000 MHzfrequency band as well as fair performance in the 50 MHz-900 MHzfrequency band.

In another embodiment, the splitter device may be or include a two-waysplitter that includes a two-stage micro-strip splitter design. Thesplitter device may be made from a glass-reinforced epoxy laminatematerial such as FR4 and be about 39 mil thick. The first stage and/orthe second stage may have a width from about 5 mil to about 20 mil(e.g., about 10 mil), and a length from about 1000 mil to about 2000 mil(e.g., about 1400 mil). The splitter device also may include one or moreisolation elements, which may be resistors, capacitors inductors or acombination thereof. For example, the splitter device may include afirst resistor having a resistance from about 100 ohms to about 300 ohms(e.g., about 200 ohms), and a second resistor having a resistance fromabout 300 ohms to about 500 ohms (e.g., about 400 ohms). The splitterdevice may have an insertion loss in the MoCA frequency band that isless than about 4.8 dB, less than about 3.8 dB, or less than about 2.8dB. The splitter device may have an isolation in the MoCA frequency bandthat is less than about 20 dB, less than about 16 dB, or less than about12 dB.

In another embodiment, the splitter device may be or include a four-waysplitter that includes three, two-stage micro-strip splitters. Thesplitter device may be made from FR4 and be about 39 mil thick. Thefirst stage and/or the second stage each splitter may have a width fromabout 5 mil to about 20 mil (e.g., about 10 mil), and a length fromabout 1000 mil to about 2000 mil (e.g., about 1400 mil). One or more ofthe splitters may also include resistors. For example, the firstsplitter may include 0 ohm resistors. The second and third splitters mayeach include two higher value resistors. The first resistor of thesecond splitter and/or the third splitter may have a resistance fromabout 100 ohms to about 300 ohms (e.g., about 200 ohms), and the secondresistor of the second splitter and/or the third splitter may have aresistance from about 300 ohms to about 500 ohms (e.g., about 400 ohms).The first splitter may be connected to the second and third splittersusing intermediate transmission lines having a width from about 25 milto about 40 mil (e.g., about 32 mil). The splitter device may have aninsertion loss in the MoCA frequency band that is less than about 12 dB,or less than about 8 dB. The splitter device may have an isolation inthe MoCA frequency band that is less than bout 20 dB, less than about 16dB, or less than about 12 dB. The splitter device may have a return lossin the MoCA frequency band that is greater than about 8 dB, greater thanabout 10 dB, or greater than about 12 dB. The micro-strip tracks may beon the top side or the bottom side of the printed circuit board (PCB).The resistors may be mounted on the same side or an opposite side of thePCB micro-strip tracks.

In another embodiment, the splitter device may be or include aneight-way splitter that includes seven, two-stage micro-strip splitters.The splitter device may be made from a glass-reinforced epoxy laminatematerial such as FR4 and may be about 39 mil thick. The first stageand/or the second stage each splitter may have a width from about 5 milto about 20 mil (e.g., about 10 mil), and a length from about 1000 milto about 2000 mil (e.g., about 1400 mil). One or more of the splittersmay include resistors. For example, the first splitter, the secondsplitter, and the fifth splitter may include 0 ohm resistors. The thirdsplitter, the fourth splitter, the sixth splitter, and the seventhsplitter may each include two higher value resistors. The first resistorof the third splitter, the fourth splitter, the sixth splitter, and/orthe seventh splitter may have a resistance from about 100 ohms to about300 ohms (e.g., about 200 ohms), and the second resistor of the thirdsplitter, the fourth splitter, the sixth splitter, and/or the seventhsplitter may have a resistance from about 300 ohms to about 500 ohms(e.g., about 400 ohms). The splitters may be connected usingintermediate transmission lines having a width from about 25 mil toabout 40 mil (e.g., about 32 mil). The splitter device may have aninsertion loss in the MoCA frequency band that is less than about 16 dB,or less than about 12 dB. The splitter device may have an isolation inthe MoCA frequency band that is less than bout 20 dB, or less than about16 dB.

FIG. 1 illustrates a schematic view of a two-way, one-stage micro-stripsplitter device 100 according to an embodiment. The micro-strip splitterdevice 100 includes an input port 102, a first output port 104 and asecond output port 106. First and second transmission lines connect theinput port to the first and second output ports, respectively. Aresistor 108 is connected between the first and second transmissionlines. The transmission lines may be ¼ wave transmission lines, forexample.

FIG. 2 illustrates a schematic view of a two-way, two-stage micro-stripsplitter device 200 according to other exemplary embodiments of thedisclosure. The two-way, two-stage micro-strip splitter device 200includes a first transmission line 203 connecting an input port 202 to afirst output port 204 and a second transmission line 205 connecting theinput port 202 to a second output port 206. A first isolation element208 is connected between the first transmission line 203 and the secondtransmission line 205. A second isolation element 210 is connectedbetween the first transmission line 203 and the second transmission line205, with the second isolation element 210 being positioned downstream(closer to the output ports 204, 206) than the first isolation element208. The isolation elements 208, 210 may be resistors. In someembodiments, the isolation element 208 may be a resistor having aresistance of about 100 ohms to about 300 ohms (e.g., about 200 ohms),and the isolation element 210 may be a resistor having a resistance ofabout 300 ohms to about 500 ohms (e.g., about 400 ohms). The isolationelements 208, 210 may have values (such as resistance values) that areset to provide a predetermined isolation level and/or a predeterminedinsertion loss, as further explained herein. In some embodiments, thesplitter device 200 of FIG. 2 (and the other splitter devices disclosedherein) may be a Wilkinson splitter device. A Wilkinson Splitterdifferentiates itself from other splitters by establishing it'sfrequency or operation and impedance matching within the transmissionline construction via line length and width while providing very lowinsertion loss and isolation at the frequency band of interest.

FIG. 3 illustrates a schematic view of a two-way, two-stage micro-stripsplitter device 300 according to embodiments of the disclosure. Thesplitter device 300 may have an input port 302, a first output port 304and a second output port 306. A first transmission line 308 may connectthe input port 302 to the first output port 304 and a secondtransmission line 310 may connect the input port 302 to the secondoutput port 306. A first isolation element 312 may connect the firsttransmission line 308 to the second transmission line 310 at positions316 and 318. A second isolation element 314 may connect the firsttransmission line 308 to the second transmission line 310 at positions320 and 322, and the second isolation element 314 may be positioneddownstream (closer to the output ports 304, 306 than the first isolationelement 312.

The first isolation element 312 may be connected to the first and secondtransmission lines 308, 310 between a first portion 324 and a secondportion 328 of the first transmission line and between a first portion326 and a second portion 330 of the second transmission line 310. Thesecond isolation element 314 may be connected to the first and secondtransmission lines 308, 310 between the second portion 328 and theoutput port 304 and between the second portion 330 and the output port306. Capacitors 332, 334 and 336 may be positioned along thetransmission lines between the ports. As in the embodiment of FIG. 2 ,the isolation elements 312, 314 may have values (such as resistancevalues) that are set to provide a predetermined isolation level and/or apredetermined insertion loss, as further explained herein.

FIG. 4 illustrates a schematic view of an four-way, two-stagemicro-strip splitter device 400, according to embodiments of thedisclosure. The splitter device 400 has an input port 402 and fouroutput ports 404, 406, 408 and 410. The splitter device 400 alsoincludes a first splitter 412, a second splitter 414 and a thirdsplitter 415. The first splitter 412, the second splitter 414 and thethird splitter 415 each include a first transmission line 416, 424, 438and a second transmission line 418, 428, 440, as well as a firstisolation element 420, 430, 442 and a second isolation element 422, 432,444 connected between the respective first and second transmissionlines. Capacitors 434, 436, 446, 448 and 450 may be connected at variouslocations between the input port 402 and the output ports 404, 406, 408,410.

FIG. 5 illustrates a schematic view of an eight-way, two-stagemicro-strip splitter device 500 according to embodiments of thedisclosure. The splitter device 500 may have an input port 502 and eightoutput ports 504, 506, 508, 510, 512, 514, 516 and 518. The splitterdevice also includes seven splitters 520, 522, 524, 525, 527, 529 and531 configured to split and incoming signal received at the input port502 into eight output signals configured to be output at the eightoutput ports 504, 506, 508, 510, 512, 514, 516 and 518. In someembodiments, the splitter device 500 is configured to split a signalreceived at the input port 502 into eight output signals at the outputports. In some embodiments, the output signals may be MoCA signals.

The splitters 520, 522, 524, 525, 527, 529 and 531 each include a firsttransmission line 526, 536, 544, 556, 572, 582 and 594 and a secondtransmission line 528, 538, 546, 558, 570, 584 and 596. Additionally,the splitters 520, 522, 524, 525, 527, 529 and 531 each include firstisolation elements 530, 540, 548, 560, 574, 586 and 598 and secondisolation elements 532, 542, 550, 562, 580, 588 and 597 connectedbetween the respective first and second transmission lines of therespective splitters. The isolation elements may have values (such asresistance values) that are set to provide a predetermined isolationlevel and/or a predetermined insertion loss, as further explainedherein.

In at least some of the embodiments, the isolation elements may beresistors, capacitors, inductors or a combination thereof. In someembodiments, the isolation elements are selected to substantiallyequalize the isolation between the input port and each of the outputports. For example, in some embodiments, the isolation elements areselected so that the isolation levels between the input port and each ofthe output ports is less than a predetermined isolation level. In someembodiments, the isolation elements are selected to provide an insertionloss between the input port and each of the output ports that is lessthan a predetermined insertion loss level.

FIG. 6 illustrates a graph showing input to MoCA insertion loss of atwo-way micro-strip splitter device with three different combinations ofisolation elements, one with a first isolation element 312 being aresistor RW1=200 Ohms and a second isolation element 314 being aresistor with RW2=400 Ohms, another one with the first isolation elementbeing a resistor having a resistance RW1=0 Ohms and the second isolationelement being a resistor with a resistance of RW2=0 Ohms, and anotherone with the first isolation element 312 being a resistor with aresistance RW1=0 Ohms and the second isolation element being a capacitorwith a capacitance of 4.7 pF, according to some embodiments. Theinsertion loss is less than about 4 dB across the MoCA frequency band(1125-1675 MHz), which may be a predetermined insertion loss level. Thisinsertion loss level is far better than a typical resistive splitter,which may have an insertion loss of 6-8 dB.

FIG. 7 illustrates a graph showing MoCA-MoCA isolation between theoutput ports 304, 306 of the two-way micro-strip splitter device 300with three combinations of isolation elements, one with the firstisolation element 312 having a resistance RW1=200 Ohms and the secondisolation element 314 having a resistance RW2=400 Ohms, another one withthe first isolation element 312 having a resistance RW1=0 Ohms and thesecond isolation element 314 having a resistance RW2=0 Ohms, and anotherone with the first isolation element 312 being a resistor with aresistance of with RW1=0 Ohms and the second isolation element 314 beinga capacitor with a capacitance of 4.7 pF, according to some embodiments.

With the first isolation element 312 having a resistance RW=200 Ohms andthe second isolation element 314 having a resistance RW2=400 Ohms, theresult of greater than 16 dB isolation may be high for MoCAapplications. With the first isolation element 312 having a resistanceRW1=0 Ohms and the second isolation element 314 having a resistanceRW2=0 Ohms, the result may be an isolation less than 6 dB across theMoCA frequency band, which may be low for MoCA applications. A nominalisolation for MoCA application may be in the range of about 10-16 dB.With the first isolation element 312 being a resistor with a resistanceof with RW1=0 Ohms and the second isolation element 314 being acapacitor with a capacitance of 4.7 pF, the result may be thecapacitance aiding in flattening the response between ports but stillresults in an isolation of less than 6 dB. 6 dB is too low for astandalone 2-way MoCA splitter but may produce excellent results whenconfigured as an intermediate splitter within a 4-way or 8-way splittermaintaining a substantially uniform port to port isolation in the rangeof 10 to 16 dB, for example.

FIG. 8 illustrates a graph showing input to MoCA insertion loss of thefour-way micro-strip splitter device 300 with the first isolationelement 312 being a resistor with a resistance of RW1=200 Ohms and thesecond isolation element 314 being a resistor with a resistance ofRW2=400 Ohms, according to an embodiment. This example results in aninput return loss of less than about 8 dB. This result is far betterthan a typical resistive splitter, which may have an insertion loss of12.5-16 dB.

FIG. 9 illustrates a graph showing MoCA-MoCA isolation of the four-way,two-stage micro-strip splitter device 400 with the first isolationelement 420 being a nominal value resistance of 100-200 Ohms and thesecond isolation element 422 being a capacitor with a capacitance of 4.7pF according to an embodiment. The outward most splitters 414, 415 mayhave nominal isolation element resistance values such as 200 ohm and 400ohms to work in combination with reduced isolation of the intermediatesplitter 412 to achieve a uniform port to port MoCA isolation in therange of 10-16 dB.

This example provides output port to output port isolation of 10-16 dBacross the MoCA frequency band. The isolation level (as well as theinsertion loss and uniformity of the isolation level between the outputports) can be adjusted by changing one or more of the isolation elementsby value or type. For example, the isolation elements can be varioustype, such as resistors, capacitors, inductors, or any combinationthereof. The value (resistance, capacitance, inductance) of theresistors, capacitors and/or inductors can be changed as need to providethe isolation level, insertion loss and uniformity of the isolationlevel between the output ports. Adjusting the resistance values of theisolation elements in the outer-most splitters to a range of 10-16 dBbetween adjacent ports then reducing the MoCA isolation of theintermediate splitter by dropping the resistance close to zero and orreplacing with a capacitor or any combination of RC, LC or RLC willbalance the distant port to port MoCA isolation to the same 10-16 dBrange.

As described herein, embodiments of the disclosed micro-strip splitterdevices include one or more splitters with isolation elements that maybe selected to provide predetermined levels of isolation between theoutput ports and predetermined levels of input port to output portinsertion loss.

While various aspects and embodiments have been disclosed herein, otheraspects and embodiments will be apparent to those skilled in the art.The various aspects and embodiments disclosed herein are for purposes ofillustration and are not intended to be limiting, with the true scopeand spirit being indicated by the following claims. The presentdisclosure is not to be limited in terms of the particular embodimentsdescribed in this application, which are intended as illustrations ofvarious aspects. Many modifications and variations can be made withoutdeparting from its spirit and scope, as will be apparent to thoseskilled in the art. Functionally equivalent apparatuses within the scopeof the disclosure, in addition to those enumerated herein will beapparent to those skilled in the art from the foregoing descriptions.Such modifications and variations are intended to fall within the scopeof the appended claims. The present disclosure is to be limited only bythe terms of the appended claims, along with the full scope ofequivalents to which such claims are entitled. It is also to beunderstood that the terminology used herein is for the purpose ofdescribing particular embodiments only, and is not intended to belimiting.

With respect to the use of substantially any plural and/or singularterms herein, those having skill in the art can translate from theplural to the singular and/or from the singular to the plural as isappropriate to the context and/or application. The varioussingular/plural permutations may be expressly set forth herein for sakeof clarity.

It will be understood by those within the art that, in general, termsused herein, and especially in the appended claims (e.g., bodies of theappended claims) are generally intended as “open” terms (e.g., the term“including” should be interpreted as “including but not limited to,” theterm “having” should be interpreted as “having at least,” the term“includes” should be interpreted as “includes but is not limited to,”etc.). It will be further understood by those within the art that if aspecific number of an introduced claim recitation is intended, such anintent will be explicitly recited in the claim, and in the absence ofsuch recitation no such intent is present. For example, as an aid tounderstanding, the following appended claims may contain usage of theintroductory phrases “at least one” and “one or more” to introduce claimrecitations. However, the use of such phrases should not be construed toimply that the introduction of a claim recitation by the indefinitearticles “a” or “an” limits any particular claim containing suchintroduced claim recitation to embodiments containing only one suchrecitation, even when the same claim includes the introductory phrases“one or more” or “at least one” and indefinite articles such as “a” or“an” (e.g., “a” and/or “an” should be interpreted to mean “at least one”or “one or more”); the same holds true for the use of definite articlesused to introduce claim recitations. In addition, even if a specificnumber of an introduced claim recitation is explicitly recited, thoseskilled in the art will recognize that such recitation should beinterpreted to mean at least the recited number (e.g., the barerecitation of “two recitations,” without other modifiers, means at leasttwo recitations, or two or more recitations). Furthermore, in thoseinstances where a convention analogous to “at least one of A, B, and C,etc.” is used, in general such a construction is intended in the senseone having skill in the art would understand the convention (e.g., “asystem having at least one of A, B, and C” would include but not belimited to systems that have A alone, B alone, C alone, A and Btogether, A and C together, B and C together, and/or A, B, and Ctogether, etc.). In those instances where a convention analogous to “atleast one of A, B, or C, etc.” is used, in general such a constructionis intended in the sense one having skill in the art would understandthe convention (e.g., “a system having at least one of A, B, or C” wouldinclude but not be limited to systems that have A alone, B alone, Calone, A and B together, A and C together, B and C together, and/or A,B, and C together, etc.). It will be further understood by those withinthe art that virtually any disjunctive word and/or phrase presenting twoor more alternative terms, whether in the description, claims, ordrawings, should be understood to contemplate the possibilities ofincluding one of the terms, either of the terms, or both terms. Forexample, the phrase “A or B” will be understood to include thepossibilities of “A” or “B” or “A and B.” In addition, where features oraspects of the disclosure are described in terms of Markush groups,those skilled in the art will recognize that the disclosure is alsothereby described in terms of any individual member or subgroup ofmembers of the Markush group.

What is claimed is:
 1. A MoCA splitter device for providing an outputport isolation level that is less than a predetermined isolation levelin a MoCA frequency band and for providing an input port to output portinsertion loss that is less than a predetermined insertion loss levelcomprising: an isolation level limiting device configured to provide anoutput port isolation level that is less than a predetermined isolationlevel in a MoCA frequency band; an insertion loss limiting deviceconfigured to provide an input-output port insertion loss level that isless than a predetermined insertion loss level; wherein the isolationlevel limiting device is configured to provide a substantially uniformoutput port isolation level; wherein the predetermined isolation levelis about 16 dB or less; wherein the MoCA frequency band is 1125-1675MHz; wherein the predetermined insertion loss level is about 8 dB orless; and further comprising a Wilkinson circuit configuration.
 2. Thedevice of claim 1, further comprising: an input port; a plurality ofoutput ports; and a splitter configured to be connected between theinput port and the plurality of output ports.
 3. The device of claim 1,further comprising a splitter that includes: a first transmission line,a second transmission line, and the isolation level limiting device thatincludes a first isolation element connected between the firsttransmission line and the second transmission line, and a secondisolation element connected between the first transmission line and thesecond transmission line.
 4. The device of claim 3, wherein the firstisolation element and the second isolation element are configured tocooperate with each other so as to provide the output port isolationlevel that is less than the predetermined isolation level in the MoCAfrequency band.
 5. The device of claim 3, further comprising a pluralityof output ports, and wherein the first isolation element and the secondisolation element are configured to cooperate with each other so as toprovide the output port isolation level between each of the plurality ofoutput ports that is less than the predetermined isolation level in theMoCA frequency band.
 6. The device of claim 1, wherein the isolationlevel limiting device comprises a first isolation element and a secondisolation element.
 7. The device of claim 1, wherein the isolation levellimiting device includes a first isolation element located upstream froma second isolation element.
 8. The device of claim 1, wherein theinsertion loss limiting device comprises a first isolation element and asecond isolation element.
 9. The device of claim 8, further comprisingan input port and a plurality of output ports, and wherein the firstisolation element and the second isolation element are configured toprovide the input-output port insertion loss level between the inputport and each of the output ports that is less than the predeterminedinsertion loss level.
 10. The device of claim 1, further comprising aplurality of output ports and wherein the isolation level limitingdevice is configured to provide the substantially uniform isolationlevel between each of the plurality of output ports.
 11. The device ofclaim 1, wherein the isolation level limiting device comprises a typeand a value of device that are each selected to configure the outputport isolation level to be less than the predetermined isolation levelin the MoCA frequency band.
 12. The device of claim 1, wherein theinsertion loss limiting device comprises a type and a value that areeach selected to configure the input-output port insertion loss level tobe less than the predetermined insertion loss level.
 13. The device ofclaim 1, wherein the insertion loss limiting device comprises a firstresistor and a second resistor, and the first resistor has a resistanceof about 200 Ohms or less and the second resistor has a resistance ofabout 400 Ohms or less.
 14. The device of claim 1, wherein the insertionloss limiting device comprises a resistor and a capacitor, and theresistor has a resistance of about 200 Ohms or less and the capacitorhas a capacitance of about 6.8 pf or less.
 15. A MoCA splitter devicefor providing an output port isolation level that is less than apredetermined isolation level in a MoCA frequency band and aninput/output port insertion loss that is less than a predeterminedinsertion loss level comprising: an isolation level control deviceconfigured to provide a substantially uniform output port isolationlevel that is less than a predetermined isolation level in a MoCAfrequency band and an input-output port insertion loss level that isless than a predetermined insertion loss level; wherein thepredetermined isolation level is about 16 dB or less; wherein the MoCAfrequency band is 1125-1675 MHz; wherein the predetermined insertionloss level is about 8 dB or less; and further comprising a Wilkinsoncircuit configuration.
 16. The device of claim 15, further comprising:an input port; a plurality of output ports; and a splitter configuredconnected between the input port and the output port.
 17. The device ofclaim 15, further comprising a splitter that includes a firsttransmission line and a second transmission line, and the isolationlevel control device includes a first isolation element connectedbetween the first transmission line and the second transmission line,and a second isolation element connected between the first transmissionline and the second transmission line.
 18. The device of claim 17,wherein the first isolation element and the second isolation element areconfigured to cooperate with each other so as to provide the output portisolation level that is less than the predetermined isolation level inthe MoCA frequency band.
 19. The device of claim 15, wherein theisolation level control device includes a first isolation elementlocated upstream from a second isolation element.
 20. The device ofclaim 15, wherein the isolation level control device comprises a typeand a value of device that are each selected to configure the outputport isolation level to be less than the predetermined isolation levelin the MoCA frequency band.
 21. The device of claim 15, wherein theisolation level control device comprises a type and a value of devicethat are each selected to configure the input-output port insertion losslevel to be less than the predetermined insertion loss level.
 22. Thedevice of claim 15, wherein the isolation level control device comprisesa type and a value that are each selected to provide the substantiallyuniform output port isolation level.
 23. The device of claim 15, whereinthe insertion loss limiting device comprises a first resistor and asecond resistor, and the first resistor has a resistance of about 200Ohms or less and the second resistor has a resistance of about 400 Ohmsor less.
 24. The device of claim 15, wherein the insertion loss limitingdevice comprises a resistor and a capacitor, and the resistor has aresistance of about 200 Ohms or less and the capacitor has a capacitanceof about 6.8 pf or less.
 25. The device of claim 15, wherein theisolation level control device is further configured to provide aninput-output port insertion loss level that is less than a predeterminedinsertion loss level, wherein the predetermined insertion loss level isabout 8 dB or less.
 26. The device of claim 25, wherein the isolationlevel control device comprises a type and a value of device that areeach selected to configure the input-output port insertion loss level tobe less than the predetermined insertion loss level.
 27. A MoCA splitterdevice for providing an output port isolation level that is less than apredetermined isolation level in a MoCA frequency band comprising: anisolation level control device configured to provide an output portisolation level that is less than a predetermined isolation level in aMoCA frequency band; wherein the predetermined isolation level is about16 dB or less; wherein the MoCA frequency band is 1125-1675 MHz; andfurther comprising a Wilkinson circuit configuration.
 28. The device ofclaim 27, further comprising: an input port; a plurality of outputports; and a splitter configured connected between the input port andthe output port.
 29. The device of claim 27, further comprising asplitter that includes a first transmission line and a secondtransmission line, and the isolation level control device includes afirst isolation element connected between the first transmission lineand the second transmission line, and a second isolation elementconnected between the first transmission line and the secondtransmission line.
 30. The device of claim 29, wherein the firstisolation element and the second isolation element are configured tocooperate with each other so as to provide the output port isolationlevel that is less than the predetermined isolation level in the MoCAfrequency band.
 31. The device of claim 27, wherein the isolation levelcontrol device includes a first isolation element located upstream froma second isolation element.
 32. The device of claim 27, wherein theisolation level control device comprises a type and a value of devicethat are each selected to configure the output port isolation level tobe less than the predetermined isolation level in the MoCA frequencyband.
 33. The device of claim 27, wherein the isolation level controldevice comprises a type and a value that are each selected to provide asubstantially uniform output port isolation level.
 34. The device ofclaim 27, wherein the insertion loss limiting device comprises aresistor and a capacitor, and the resistor has a resistance of about 200Ohms or less and the capacitor has a capacitance of about 6.8 pf orless.